E-resources
Peer reviewed
-
Huang, Sheng-Chao; Deng, Cong; Wang, Shui-Xiu; Wei, Wen-Chao; Chen, Hong; Wang, Yu-Zhong
Polymer degradation and stability, 07/2019, Volume: 165Journal Article
In the past work, few study considers an effect of nanoparticle as a synergistic flame retardant on the interfacial interaction between flame retardants and polymer matrix, as well as further influence on the flame retardancy and mechanical properties of flame-retarding polymers. In this work, the electrostatic action was used to prepare a novel ammonium polyphosphate@layered double hydroxide (APP@LDH) in which the LDH nanoparticles accumulated at the surface of APP to achieve the highly-efficient synergistic action of LDH in thermoplastic polyurethane/APP (TPU/APP) and reduce the deterioration of APP to mechanical properties of TPU. Scanning electron microscope, etc., demonstrated that the APP@LDH was prepared successfully. Combustion tests results showed that the APP@LDH had much higher flame-retarding efficiency than the APP/LDH which was prepared through a simple physical blending process. Only 1.0 wt% LDH made the TPU pass the V-0 rating with no dripping in the UL-94 test and a limiting oxygen index (LOI) of 29.2% in the case of 7.0 wt% APP@LDH. However, the TPU/APP/LDH with 1.0 wt% LDH did not pass the V-0 rating, and a dripping behavior also existed at 7.0 wt% APP/LDH. In cone calorimeter test, the heat release and smoke production of TPU/APP@LDH were also lower than the corresponding values of TPU/APP/LDH under equal amount of LDH. The analysis of flame-retardant mechanism proved that an enhanced condensed action induced by the interfacial LDH dominated the better flame retardance of APP@LDH system than that of APP/LDH system. Another important aspect is that the mechanical properties of APP@LDH system showed remarkable improvements in comparison with those of APP/LDH system. The tensile strength of TPU with 7.0 wt% APP@LDH was 32.5% higher than that of TPU with 7.0 wt% APP/LDH under equal 1.0 wt% LDH. Meanwhile, the elongation at break for the former was maintained at 863.0%, almost equal to that of TPU. This work illustrates that the interfacial accumulation of LDH may enhance its synergistic flame-retarding efficiency and meanwhile achieve the mechanical enhancement for TPU/APP. •Electrostatic action induced ammonium polyphosphate@layered double hydroxide.•Highly-efficient synergistic flame retardance and mechanical enhancement for TPU.•Mechanisms for the improved flame retardance and mechanical properties.
Author
![loading ... loading ...](themes/default/img/ajax-loading.gif)
Shelf entry
Permalink
- URL:
Impact factor
Access to the JCR database is permitted only to users from Slovenia. Your current IP address is not on the list of IP addresses with access permission, and authentication with the relevant AAI accout is required.
Year | Impact factor | Edition | Category | Classification | ||||
---|---|---|---|---|---|---|---|---|
JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
Select the library membership card:
If the library membership card is not in the list,
add a new one.
DRS, in which the journal is indexed
Database name | Field | Year |
---|
Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
---|
Source: Personal bibliographies
and: SICRIS
The material is available in full text. If you wish to order the material anyway, click the Continue button.